Tobacco pipe



June 4, 1935. D. P. LAVIETES 2,003,373

TOBACCO PIPE Filed Jan. 24, 1954 i li *i- INVENTOR ATTORNEY bowlz.

Patented June 4, 1935 UNITED sm'rss BA rroeAccoi-irs; David P. liavietes, Brooklyn, ra n: 7 Application January 24,1934, Serial. No, 708,026

. 7 mm. My invention relates to improvements. in t0-' baccorpipes and is particularlydirected. to what is: termed; the. screw bit. type.- of. connection b'etween. the bowl. stem: and: the pipe bit.

In; practice it has been. an extremely difiicult thirrgftor do to construct'and maintain: constant. alignment of a screw type connection in pipesof.

this character; 1. e. in the usual=constructionthe bit is. provided:withathreaded'stem. which screws into-the threaded bore-0t the.- bowl; stem and. when the threaded; stem hasjlbrought the-shoulder at its. inner end into contact! with the; end' of the bowl stem; theflattened tip of thebit shouldqbeiexactly" at rightv angles toirthe vertical axis of the pipe It carefully calculated a new'pipe-will have the bit: and; bowl in: proper relation. to each" other; but after: the. pipe has been put in use and the bit removed and replaced several times the-contacting. surfaces of; thebi-t and. stem become worn away with the result that the screw in. thestem takesup on; worn parts and the bit; is turnedzto a. point where: it is out of. alignment.

Apipe in this conditionis prac-- which will preventconstant'and proper. position ing. oi the parts to bringthe-bit in exact alignment witlr the: axis of the-bowl. I accomplish this object by providing complementalthreaded units preferably" both: of metal, carried by the bowh stem and bit, respectively,. and designed torbe; permanently fixedtin their respective parts.-

andcapable'ot being screwed, one over the. other. only toe: point which willibring the bitinto exact relationzwitlr respect tothe axisofthe pipebowl.

A fiurther. object of my invention. is..to. provide.

ascrew typeunion for a pipe-in which thethreads i of the connection are otsuchr a pitch astorequireza. number of turns ot the bit to insure a. perfect connection. between the bit and stein-and. I. accomplish. this object by tapering the; male portion of the unit andthreadingthe extremetipmnlmwhile thefemale portion correspondingly tapered and threaded:- soas to enable. the one portion to: beinserted axially ot the other portion and then turned on the. threads to wedge. theportions together.

A. still. further object. of: this. invention is to (Cl: rar -12)- provide.- one of thecomplementary units: of ther union' with a collar'or flange which formsa; seat; of. metal at the. free end. of. the bowlstemand. againstwhich: the metal lined end of. the bit is: screwed whenthe latter is 7 brought into proper; position, on'the stem; whereby the contact of;

the two metal surfaces prevents turning, of the screw too far and the consequent displacement. offthe: two parts of the pipe.

'And astillifurther object of the mentary .unit's of the union in the bowl: stem and.

bit: an'dII accomplish thisobject by permanently, ailixingithe shanks of? the units in position by.- av

pini=drivenithrough thestem or bit and embedding itself in the surface of. theshank without. inter-' ferin'g with; the: smoke passage therein; orby} making the shank of .an-irre'gular transverse section and giving thebor'e into which" it is received a corresponding shape. W

And? another object of the invention istoy introduce anai'rinlet into. the smokerpassa'ge of the:union'-,.whereby air is drawn into the smoke' passing between the stem and bit to produce: a cool, dry v smoke condition in the pipe.

Other objects and advantages will appear from the following detail description thereof takenin,

connection with thedrawing illustrating several forms-my improved pipe may take. In thedrawing, Figure ,1: is a longitudinal sectional viewof a pipe embodying a screw union andmeans for fixing; the parts of the union in their respectivemembers of the-stem and bit.. Figure 2is:an elevational view of the screw unionv shown in Fig f uretl. Figure 3 is a substantially transverse sectional View taken on lines.33 of. Figure 1. Figure-4 is a substantially longitudinal sectionalview of a pipe embodying a construction similarv to that shown in Figure 1 except that the unionis provided; with a combined conical and. screw joint. Figure 5' is a transverse sectional view taken: in theibowlstem and shank of one member of the; union and Figure 6 is a similar View show ing a-modified form ofshank.

. Referring tothe drawing, 10 denotes thebowl,

invention. is topreventi turning of the respective comple;

H its stem-and I2 a uniform passage or bore to establishcommunication between the bowl and stem II and bit I3. are detachablyconnectedby means ofa screw union l4- which is constructed preferably of metal and which is-capable oil insuring perfect alignment of the bowl and bit. 1r-- screw too far. m H

Therunion l4 constructed of two. comple respective of any ordinary force. used to turn. the.-

a. bit 1.3. removably attached to' the stem. The

of the shank I5 without entering or obstructing the bore thereof. In Figures 5 and 6 the same purpose is accomplished without the pin by making the shank of square tubing I5 and broaching the bore I2 or by forming the shank I5 substantially elliptical in transverse section and providing the stem with intersectingjparallel bores I2 to conform to the shank I5". According to Figures 1 to 3, the outer end of the shank I5 terminates in an annular flange I6, which seatsagainst the free end of the stem II, and which is provided with an externally threaded nipple I1, the pitch of the threads thereof being of an angle to require a minimum number of turns of the unit B to bring it tightly against the flange I6.

A relatively short length of tubing I8 projects from the free end of the nipple I1 and a uniform smoke passage or bore I9 is established throughout the unit A. V V V Referring now to the complementary unit B, illustrated in Figures 1 and 2, the same is permanently fixed in the inner end of the bit I3 and comprises a sleeve 20, exteriorly knurled and tapered at its free end to be driven into the end of an enlarged smoke chamber 2| of the bit, the "chamber communicating with a smaller metal lined bore 22 running to the tip 23 of the bit. The tip 23 is preferably of a flattened elliptical transverse section, the major axis thereof being substantially at right angles to the upright axis of the bowl of the pipe when the bit is screwed into the stem and its free inner end abuts the flange I6. The bore of the sleeve 20 is threaded throughout its length to screwover the threads of the nipple I'I.

In the modification shown in Figure 4, the nipple I I? is tapered inwardly from the flange I6 and'threaded at its tip only, the pitch of the threads being such as to draw the bit against the fiange'and into proper position by practically one turn. Accordingly the bore of the sleeve 2|) is tapered inwardly towards its inner end to fit snugly over the taper of the nipple I1 and is provided with corresponding threads to accommodate the threads at the end of the nipple. This construction facilitates replacing and re-' moving the bit from the stem, because it is simply necessary to insert the nipple axially of the sleeve and give the bit one or two turns to seat it against the flange.

The union according to the present invention is provided with an air opening 24, which is formed by drilling a small passage through the bit proper, metal sleeve 20 and threaded nipple or screw tenon I! to establish communication with the smoke passage. The opening 24 is drilled after the pipe has been completely assembled so as to insure perfect register of each section of the opening. According to the embodiment of the invention shown in Figure 4 the opening 24 consists of a single section drilled radially in the flange I6. In each instance air is introduced into the small smoke aperture formed by the union I4 between the bowl and the smoke U .chamber 2I of the. bit.

I3 and securely afllxed therein by the use of cement or any other suitable agent which grips the knurled surface and holds the sleeve against relative movement with respect to the bit. The threaded nipple ll of the unit A is then screwed into the sleeve 20 to bring its outer end tightly against the flange I6. The bit I3 and union I I at this point is practically integral. The shank I5 is then inserted into the bore I2 and the bit positioned so as to bring the'major axis of its tip 23 at right angles to the upright axis of the bowl III. The shank I5 is permanently locked in this position in the stem I I by drilling a tapered opening transversely thereof along a tangent of the bore I2 and by inserting therein the tapered pin 16*, which is preferably longer than the opening, and which has its projecting smaller end trimmed off flush with the exterior surface of the stem. This arrangement insures perfect alignment of the bit at all times and throughout the life of the pipe, because when the metal end of the sleeve 20 contacts with the surface of the metal flange I6 it can be turned no further along the screw connection and at the point of contact of these two metal parts the tip 23 of the bit is in its correct position relative of the axis of the bowl.

What I claim is:-

1. In a tobacco pipe comprising a bowl member having a stem and a bit member having a well therein, the combination therewith of a screw plug to unite the bowland stemand the bit, comprising complementary units, one thereof projecting into and being locked in the stem at one end and embracing the end thereof ati its midportion and having a threaded projection at the opposite end, the other unit being fixed in the well of the bit and threaded to receive the threaded end of the first unit, said first unit having a preformed groove in the outer wall 7 thereof, and a, pin driven transversely through the stem'and into substantially tangential engagement with the first unit, whereby when the units are screwed together the end of the second unit and bit abut the portionof the first unit embracing the end of the stem and the bit is prevented from being turned too far on the stem.

2. In a tobacco pipe comprising a bowl member having a stem provided with a bore and a bit having a well therein, the combination therewith of a screw plug to unite the bowl and stem and'bit, comprising complemental screw engaging members, one thereof projecting into the bore and having a spacing collar disposed with one face against the end of the stem, the other member comprising a sleeve fixed in the well and adapted to screw over the first member to bring the bit:

into engagement with the other face of the collar and prevent turning the bit too far with respect to the bowl, said sleeve having a preformed groove in the outer wall thereof and a pin inserted transversely of the stem and engaged in the sleeve to lock the same against relative movement after the bit and screw plug have been adjusted to proper position with respect to the stem.

3. In a tobacco pipe of the character described, the combination of a bowl member and a bit therefor, a screw plug to unite the bowl and bit, said plug having a preformed groove in the outer wall thereof, and means inserted in the bowl member to bite into the screw plug and prevent relative movement thereof with respect to the bowl member.

4. In a tobacco pipe of the character described, the combination of a bowl having a bored shank and a bit to form a continuation of said shank, a screw plug to unite the shank and bit, comprising complementary units, one thereof being screwed into the other and fixed in the bit and the other having a tubular portion inserted in the bore of the shank and being adjustable to bring the bit and shank into proper position with respect to each other, said tubular portion having a preformed groove in the outer wall thereof, and a pin driven transversely through the shank and into tangential engagement with the tubular portion to prevent movement thereof in the shank.

DAVID P. LAVIETES. 

